I debugged some of Facebook's internal endpoints and I found a wired response payload.It contains a for loop and JSON blob, why and what could you do with this loop?
Endpoint:
Example json:
for (;;);{"bootloadable":{"BanzaiODS":{"r":["csr:_4b_2"],"rds":{"m":["BanzaiODS","BanzaiScuba"]}},"FbtLogging":{"r":["csr:_4b_3"]},"Banzai":{"r":["csr:_4b_4"],"rds":{"m":["BanzaiODS","BanzaiScuba"]}},"BanzaiScuba":{"r":["csr:_4b_5"],"rds":{"m":["BanzaiODS","BanzaiScuba"]}...